Feed-roller mechanism for sugar-mills.



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1,108,780. Patented Aug.25, 1914.

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WITNESSES: INV ENTOR :fa/,27295 0 919',

J. OGG. FEED EOLLER MBGHANISM FOR SUGAR MILLS.

APPLIOATION PILBD APR. 16, 1914. 1, 1 08,780. Patented Aug. 25, 1914 2 SHEBTS-SHEET 2.

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.7 l/ A TTO a N z THE NORRIS PETERS CO. FHOTU LIT-U.. WASHINGTON. D' C JAMES OGG, OF PAI-IALA, TERRITORY OF HAWAII.

FEED-ROLLER MECHANISM FOR SUGAR-MILLS;

Specification of Letters Patent.

Patented Aug. 25, 1914.

Application filed April 16, 1914. Seral No. 832,149.

To all 'whom it may concern Be it known that I, J AMES OGG, a subject of the King of Great Britain, residing at Pahala, in the county of Kau and Territory of Hawaii, have invented new and useful Improvements in Feed-Roller Mechanism for Sugar-Mins, of which the following is a specification.

This invention relates to sugar mills and pertains especially to the feed and crusher roller mechanism.

The invention consists of the parts and the combination and construction of parts as hereinafter more fully described and claimed, having reference to the accompanying drawings, in which-- v i .Figure l is a vertical transverse section of a sugar mill. Fig. 2 is an enlarged detail of one of the rolls. Fig. 3 is a detail plan view showing the shifting device. Fig. 4: is a detail erspective view of the switch cam.

A is a suitable frame in which the three coperating roilers 2-3 4 are suitably journaled and operatcd in appropriate fashion, so that the material to be crushed which is fed in from the conveyer 5 will be delivered at the opposite side of the machine at the point 6; the expressed juices being collccted in a suitable unclerneath trough or tank 7.

The invention in the present case resides in the peculiar construction of the roller 3. Also in connection with this roller 3 may be employed a special form of scraper mechanism, which latter however is not always essential to the Successful operation of the roller. The peculiar feature in regard to roller 3 is the deep spiral peripheral groove 8,.which it possesses in addition to the usual shallow annular grooves 9. It has been found that with the deep groove the eX- pressed juice will pass along with the roller instead of flowing back over the front side of the roller. With finely powdered bagasse this flowing back of the juice carries along with it a good deal of the finer bagasse and also hinders the mill from feeding properly;

there being formed in the absence of the deep groove a trough of dilute juice causing the-whole quantity to float. Thus the mill would refuse to feed if a heavy dilution of water was added to the bagasse, which is very necessary to good work. The use of a single deep spiral groove overcomes the difficulty formerly experienced of this back flow, and interference with feed, and at the same time the spiral groove does not weaken the shell of the roller. v The *groove 8 preferably has a pitch of one in 10 or 12 inches and approximately 2 wide, l-- to 1-5 inches deep.

In connection with the spiral groove 8 I may employ a scraping device which will keep the grooves clear and add to the efiicencyof the machine. This scraping device comprses a sliding scraper bar 10 carrying a series of scraping fingers 11 engaging in the groove 8 as a guide track; the bar being recprocated periodically by appropriate means, first by the groove in one direction and then returned by automatic means in the opposite direction; the fingers 11 thus traveling back and forth a limited distance endwise of the roller 3; being in the groove when traveling in one direction and temporaraly lfted out of the groove when rerturning to initial position.

The means shown for reciprocating the scraper bar 10, are as follows: The bar 10 is mounted for reciprocation in suitable guides 12 and normally tends to reciprocate in one direction by means of a balance weight 13 attached by a rope 14 passing over a groove sheave 15, to one end of the bar 10. Whenever the fingers 11 are lifted out of the groove 8 and held down the weight 13 will naturally shift the bar 10 and fingers 11 to that end of the machine adjacent to the weight 13. When the fingers 11 drop back into the groove the rotation of the roller will carry the bar and fingers along after the fashion of a worm gear. The release of the fingers 11 from the groove is eii'ected by means of a crank 16 on bar 10 engaging a boss 17 on shaft 18 of'roller 3 at the moment that the fingers 11 have traveled their desired limit of movement in a direction opposite from the weight 13; the boss 17 then depressing crank arm 16 thereby causing fingers 11 to move out of groove 8 whereupon weight 13 immediately pulls fingers 11 and bar 10 in an opposite direction; the fingers 11 being held out of the groove during this return movement by means of a cam bar 18' against which the crank 16 rides as it leaves the boss 17 Riding ofi' of the rear end of the cam 18', crank 16 rises under the force of a counter-weight 19, immediately causing the fingers 11 to drop into the groove 8. The two positions of crank 16 are represented in dotted lines; these positions being the positions assumed at the end of the respective strokes; the crank 16 riding against oam 18' When traveling in one direction and passing across it when traveling in the other direction.

Having thus desorbed my invention, what I clain and desire to secre by Letters Patent is-,

1. In a cane crusher, the conbination of a pair of ooperating crushing rollers one only of said rollers having a deep spiral peripheralgroo've 'forning a channel whereby the expressed juiees will pass along with the roller instead of back-flowing over the front side 'of the roller, suhstantially as descrihed. i 2. In a feed roller mechanism for sugar nills, a 'olier having its surface provided With shailow annular grooves and in additon thereto a deep peripheral spirai groove. V 3. In a feed roller mechanisrn, the coinbination of coperating enshing rollers, one

of said rollers having a perpheral spiral groove, and a seraper finger. operatve in said 'spral groove.

turning it to initial position 'or re-insertion into the groove;

5. In a eane crusher, the comhnaton. of a plurahty of feed rollers, one of which lS provded with a perpheral groove, a reeiprocatng scraper bar having fingers en- *gageable with the groove, means for periodicall liftin the fi11 `6I'S and means Whereh y t) b 7 on the finge's being lifted the scrape* har and fingers are returned to initial position.

In testimony whereof I have hereunto set ny hand in the presence of two subscrihing witnesses.

JAMES OGG.

`Witnesses2 DAVn 'JAMIESON, LAURENCE C. PALMER.

Co'pies of this patent may he obtained for five cents each, by ad'essing the Commissioner of Patents, Washington, D. C. 

